<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
        <a href="/?lang=en_US">English(US)</a>
        <a href="/?lang=zh_CN">简体中文</a>
        <label th:text="#{say}"></label>
    </body>
</html>